How do I save this in a datastore?

----------------------------------------------------- BUYING/CHECKING HANDLER[LOCAL SCRIPT] ----------------------------------------------------- 
local Player = game:GetService("Players").LocalPlayer
local Cars = Player.Cars -- Folder Inside Of Player Containing BoolValues of Cars to check if bought
local Stats = Player.leaderstats
local Cash = Stats.Cash
local SpawnCar = game.ReplicatedStorage.SpawnCar
local BoughtFunc = game.ReplicatedStorage.Bought -- Remote Function
local PriceOfItem = game.ReplicatedStorage:WaitForChild("CheckPrice"):InvokeServer(script.Parent.Parent.Name)

script.Parent.MouseButton1Click:Connect(function()
	if Cars[script.Parent.Parent.Purchased.Name].Value == true then
	    -- Spawn it
	    SpawnCar:FireServer(script.Parent.Parent.Name)
	else
	    if Cash.Value >= PriceOfItem then
	       BoughtFunc:InvokeServer(script.Parent.Parent.Name,PriceOfItem) 
	    end
	end
end)


----------------------------------------------------- REMOTE HANDLER[GLOBAL SCRIPT] ----------------------------------------------------- 
local SpawnCar = game.ReplicatedStorage.SpawnCar -- Remove Event
local BoughtFunc = game.ReplicatedStorage.Bought -- Remote Function
local CheckPrice = game.ReplicatedStorage.CheckPrice -- Remote Function

SpawnCar.OnServerEvent:Connect(function(CarName)
    -- Spawn The Car    
end)

BoughtFunc.OnServerInvoke = function(Player,CarName,PriceOfItem)
    local Cars = Player.Cars
    local Car = Cars[CarName]
    local Stats = Player.leaderstats
    local Cash = Stats.Cash
    Cash.Value = Cash.Value - PriceOfItem
    -- Spawn The Car
end

CheckPrice.OnServerInvoke = function(Player,CarName)
    local AllCars = game.ReplicatedStorage.Cars
    local Car = AllCars[CarName]
    local Price = Car.Price
    return Price.Value
end

----------------------------------------------------- CAR DATA[GLOBAL SCRIPT] ----------------------------------------------------- 
local DataStoreService = game:GetService("DataStoreService")
local DataStorage = DataStoreService:GetDataStore('CARDATASTORAGE')
local DataKey = "~~" 

local CarsInGame = game.ReplicatedStorage.Cars -- A Folder Where All The Cars That Exist In The Game Are

game.Players.PlayerAdded:Connect(function(player)
    local PlayerData = DataStorage:GetAsync(DataKey..player.userId) -- Players Existing Data If They Have Played Before
    if PlayerData then
        for i,v in pairs(CarsInGame:GetChildren()) do -- Will Create BoolValues For Each Car So It Can Determine If You Have Bought A Car
            local Bool = Instance.new("BoolValue")
            Bool.Name = v.Name
            Bool.Value = PlayerData[i]
            Bool.Parent = player.Cars
        end     
    else
        for i,v in pairs(CarsInGame:GetChildren()) do -- Will Create BoolValues For Each Car So It Can Determine If You Have Bought A Car
            local Bool = Instance.new("BoolValue")
            Bool.Name = v.Name
            Bool.Value = false
            Bool.Parent = player.Cars
        end 
    end
end)

game.Players.PlayerRemoving:Connect(function(player)
    local Cars = player.Cars
    local DataTable = {}
    for i,v in pairs(Cars:GetChildren()) do
       table.insert(DataTable,v.Value)     
    end
    DataStorage:SetAsync(DataKey..player.userId) -- Saves All Cars If They Are Owned Or Not
end)